Adaptive voice detection method and system

Details Adaptive voice detection method and system Adaptive voice detection method and system

2005-09-08

2010-02-16

McFadden, Susan (Department: 2626)

Data processing: speech signal processing, linguistics, language

Speech signal processing

For storage or transmission

Reexamination Certificate

active

07664635

ABSTRACT:
A system for detecting a voice signal includes: a first integrator for receiving an input signal and for providing a first integrator output signal, wherein the first integrator includes a first attack time; a second integrator for receiving the input signal and for providing a second integrator output signal, the second integrator including a second attack time that is substantially slower than the first attack time; and a comparator configured for receiving the first and second integrator output signals and for providing a comparator output signal indicating detection of a voice signal when the first integrator output signal exceeds the second integrator output signal by at least a threshold amount.

REFERENCES:
patent: 5012519 (1991-04-01), Adlersberg et al.
patent: 5134658 (1992-07-01), Chen et al.
patent: 5369711 (1994-11-01), Williamson, III
patent: 5661765 (1997-08-01), Ishizu
patent: 5774557 (1998-06-01), Slater
patent: 6066243 (2000-05-01), Anderson et al.

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